// Read a strip of data and decompress the specified
// amount into the user-supplied buffer.
public static int TIFFReadEncodedStrip(TIFF tif, int strip, byte[] buf, int size)
{
if (!TIFFCheckRead(tif, false))
{
return(-1);
}
TIFFDirectory td = tif.tif_dir;
if (strip >= td.td_nstrips)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Strip out of range, max {1}", strip, td.td_nstrips);
return(-1);
}
// Calculate the strip size according to the number of
// rows in the strip (check for truncated last strip on any
// of the separations).
uint strips_per_sep;
if (td.td_rowsperstrip >= td.td_imagelength)
{
strips_per_sep = 1;
}
else
{
strips_per_sep = (td.td_imagelength + td.td_rowsperstrip - 1) / td.td_rowsperstrip;
}
uint sep_strip = (uint)strip % strips_per_sep;
uint nrows = td.td_imagelength % td.td_rowsperstrip;
if (sep_strip != strips_per_sep - 1 || nrows == 0)
{
nrows = td.td_rowsperstrip;
}
int stripsize = TIFFVStripSize(tif, nrows);
if (size == -1)
{
size = stripsize;
}
else if (size > stripsize)
{
size = stripsize;
}
if (TIFFFillStrip(tif, (uint)strip) && tif.tif_decodestrip(tif, buf, size, (ushort)(strip / td.td_stripsperimage)))
{
tif.tif_postdecode(tif, buf, 0, size);
return(size);
}
return(-1);
}
// Read a strip of data and decompress the specified
// amount into the user-supplied buffer.
public static int TIFFReadEncodedStrip(TIFF tif, int strip, byte[] buf, int size)
{
if(!TIFFCheckRead(tif, false)) return -1;
TIFFDirectory td=tif.tif_dir;
if(strip>=td.td_nstrips)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Strip out of range, max {1}", strip, td.td_nstrips);
return -1;
}
// Calculate the strip size according to the number of
// rows in the strip (check for truncated last strip on any
// of the separations).
uint strips_per_sep;
if(td.td_rowsperstrip>=td.td_imagelength) strips_per_sep=1;
else strips_per_sep=(td.td_imagelength+td.td_rowsperstrip-1)/td.td_rowsperstrip;
uint sep_strip=(uint)strip%strips_per_sep;
uint nrows=td.td_imagelength%td.td_rowsperstrip;
if(sep_strip!=strips_per_sep-1||nrows==0) nrows=td.td_rowsperstrip;
int stripsize=TIFFVStripSize(tif, nrows);
if(size==-1) size=stripsize;
else if(size>stripsize) size=stripsize;
if(TIFFFillStrip(tif, (uint)strip)&&tif.tif_decodestrip(tif, buf, size, (ushort)(strip/td.td_stripsperimage)))
{
tif.tif_postdecode(tif, buf, 0, size);
return (size);
}
return -1;
}
